Our 5 in 1 facial serum contains hyaluronic acid, niacinamide and vitamin C. It can whiten the skin, fade dark spots, remove wrinkles, anti-aging, and increase skin activity. The method of use is very simple: dry after cleansing, take out the product, squeeze appropriate amount of liquid on the palm or face, evenly apply on the face, gently massage until the absorption is complete. Skin whitening, improve dark and yellow skin tone, adjust skin tone uniformity, fade black spots, reduce melanin production, fade skin spots and acne marks, deep penetration and moisturizing skin, improve dry skin rough skin, anti-aging skin firming skin, improve skin relaxation, reduce wrink